A high IQ seems to only make you confused and complex. Not Efficient.
Like he said his goal is to live forever. Through working out and dieting he hope to extend his life until medical technologies will be enable radical life extension therapy or procedures. Then why not live normal and happily save enough money to pay for a cryo-sleep contract, which is available today. It kicks in when you die. You will be thawed out and revived when technology allows it to be done.
And this is if you believe this experience is all there is to begin with.
His spirit and soul has been forced out by his ultra high IQ.